He’s doesn’t have dreads, drop-crotch pants or a face tattoo, but Clint Tuttle, a lecturer at UT’s McCombs School of Business, does share a couple of things in common with Justin Bieber. Namely, they both play guitar, and they’re both really passionate about something. Singing, presumably, for J.B (or drop crotch pants?). And what really gets Tuttle going? Microsoft Excel.

As a treat for his students on their last day of class, Tuttle performed a rendition of Bieber’s “Love Yourself” with some slightly altered lyrics.

“And if you think I lie, just ask your boss/ They’ll tell ya ‘you should go and learn Excel’,” Tuttle belts in front of a slide projecting the song’s lyrics, which also include lines like, “My students don’t like it but then they see the light/ And they never like to admit that I was right.” You can watch Tuttle’s full performance below.